5.3. Character Functions
In its manuals, Oracle divides character functions into two classes—those that return character values and those that return numeric values. The SUBSTR function, which returns a substring of a larger string, is an example of the former. The LENGTH function, which returns the length of a string, is an example of the latter. This book combines the two types into one section for ease of reference.
Get Oracle SQL: the Essential Reference now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.